JP3059309B2 - Control valve between combustion chambers - Google Patents
Control valve between combustion chambersInfo
- Publication number
- JP3059309B2 JP3059309B2 JP4271072A JP27107292A JP3059309B2 JP 3059309 B2 JP3059309 B2 JP 3059309B2 JP 4271072 A JP4271072 A JP 4271072A JP 27107292 A JP27107292 A JP 27107292A JP 3059309 B2 JP3059309 B2 JP 3059309B2
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- control valve
- sub
- valve
- combustion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はエンジンの燃焼室主室と
副室との間に設けた燃焼室間制御弁に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inter-combustion chamber control valve provided between a main chamber and a sub chamber of a combustion chamber of an engine.
【０００２】[0002]
【従来の技術】車両用のエンジンには燃料の直接噴射式
と副室を備えた予燃焼室式とがあるが予燃焼室式は副室
にて半燃えになった燃料が主室内にて燃焼するので、燃
料の性質に対して鈍感である。2. Description of the Related Art There are two types of vehicle engines: a direct fuel injection type and a pre-combustion chamber type having a sub-chamber. Because it burns, it is insensitive to the nature of the fuel.
【０００３】そして、主室と副室との間に連絡孔を有す
るエンジンでは副室内に貯えられたガス中にガソリン、
メタノール等の揮発性の燃料が噴射されるので活性化が
進み、エンジンのピストンが上死点に至る前に自発燃焼
するので高圧縮比とした場合、ノッキングが発生すると
いう問題がある。[0003] In an engine having a communication hole between the main chamber and the sub-chamber, gas stored in the sub-chamber contains gasoline,
Since volatile fuel such as methanol is injected, activation proceeds, and the engine piston spontaneously burns before reaching the top dead center. Therefore, when a high compression ratio is set, knocking occurs.
【０００４】[0004]
【発明が解決しようとする課題】上述のような主室と副
室との間に制御弁を備えたエンジンでは、圧縮行程にて
主室側が高圧になったとき、副室との間の制御弁はその
開口が極めて困難となる。In an engine having a control valve between the main chamber and the sub chamber as described above, when the pressure of the main chamber becomes high in the compression stroke, the control between the main chamber and the sub chamber is performed. The opening of the valve becomes extremely difficult.
【０００５】すなわち、制御弁は通常、吸排気弁と同様
に茸弁が主室側に拡がってシート部は主室側に有するた
め、制御弁を押下するには主室側の高圧力に打勝つ大き
な駆動力を必要とすることになる。That is, since the mushroom valve expands to the main chamber side and the seat portion is provided in the main chamber side similarly to the intake / exhaust valve, the control valve is normally pressed to a high pressure in the main chamber side to depress the control valve. You will need a large driving force to win.
【０００６】本発明はこのような問題に鑑みてなされた
ものであり、その目的は主室と副室との間の制御弁の駆
動に際し、圧縮行程の主室の高圧力に打勝つ大駆動力を
要せずに制御弁を開弁させようとする燃焼室間制御弁を
提供することにある。The present invention has been made in view of such a problem, and has as its object the purpose of driving a control valve between a main chamber and a sub-chamber so as to overcome a high pressure in a main chamber in a compression stroke. An object of the present invention is to provide a control valve between combustion chambers which tries to open a control valve without requiring force.
【０００７】[0007]
【課題を解決するための手段】上述の目的を達成するた
めに本発明によれば、予燃焼室となる副室と主室との間
の連絡口に設けられて燃料の燃焼状態を制御する燃焼室
間制御弁において、前記の連絡口の副室側に弁座を備え
て副室側に移動して開弁するとともに、電磁力により閉
弁方向にバイアスする電磁装置を有する燃焼室間制御弁
が提供される。According to the present invention, there is provided a communication port between a sub-chamber serving as a pre-combustion chamber and a main chamber for controlling a combustion state of fuel. The inter-combustion chamber control valve includes an electromagnetic device that includes a valve seat on the sub-chamber side of the communication port, moves to the sub-chamber side, opens the valve, and biases the valve in a valve closing direction by electromagnetic force. A valve is provided.
【０００８】[0008]
【作用】副室と主室との間に設けた制御弁の弁座を副室
側に設けるとともに、副室側に移動して開弁するように
したので、エンジンの圧縮行程の終期には主室の圧縮圧
気により押上げられて自動的に開弁が行われる。The valve seat of the control valve provided between the sub-chamber and the main chamber is provided on the sub-chamber side, and is moved to the sub-chamber side to open the valve, so that at the end of the compression stroke of the engine, The valve is pushed up by the compressed air in the main chamber and the valve is automatically opened.
【０００９】[0009]
【実施例】つぎに本発明の実施例について図面を用いて
詳細に説明する。Next, an embodiment of the present invention will be described in detail with reference to the drawings.
【００１０】図１は本発明にかかる燃焼室間制御弁の一
実施例を示す構成ブロック図であり、同図において、１
はシリンダで、上下に摺動するピストン２を収納するも
のであり、その頂部のシリンダヘッド１１には副室３や
吸排気弁４などが設けられている。FIG. 1 is a block diagram showing one embodiment of a control valve between combustion chambers according to the present invention.
Is a cylinder that houses a piston 2 that slides up and down, and a sub-chamber 3 and an intake / exhaust valve 4 are provided in a cylinder head 11 at the top.
【００１１】副室３はその内壁部分は高強度を有すると
ともに耐熱性のセラミックスにより形成され、中央部に
は例えば窒化珪素からなるセラミックスの制御弁５が設
けられ、副室３の上壁部に取付けられた軸穴３１により
上下に移動自在に支持されており、副室３の下方の連絡
口の副室側には制御弁５の弁座３３が形成されている。
なお、３２は燃料の噴射ノズルで副室３の側壁部分に装
着され、後述するコントローラからの指令に基づくタイ
ミングによって副室３の内壁に燃料の噴霧を吹き付ける
ように構成されている。The sub-chamber 3 has a high-strength and heat-resistant ceramic inner wall portion, and a ceramic control valve 5 made of, for example, silicon nitride. A valve seat 33 of the control valve 5 is formed on the sub-chamber side of the communication port below the sub-chamber 3 so as to be vertically movable by the mounted shaft hole 31.
Reference numeral 32 denotes a fuel injection nozzle mounted on the side wall of the sub-chamber 3, and configured to spray fuel spray on the inner wall of the sub-chamber 3 at a timing based on a command from a controller described later.
【００１２】６は電磁装置で、ヨーク６１、コイル６２
やスプリング６３などを備え、制御弁５のステム上方に
取付けられた吸引盤５１を吸引し、主室１２との連絡口
上面の弁座３３に茸弁５２を押付けて副室３を密閉する
ものである。なお、電磁装置６の下方の軸穴３１には副
室３からの高熱を遮断する遮熱シート３４が備えられて
いる。Reference numeral 6 denotes an electromagnetic device, which includes a yoke 61 and a coil 62.
And a spring 63, which sucks the suction plate 51 attached above the stem of the control valve 5, presses the mushroom valve 52 against the valve seat 33 on the upper surface of the communication port with the main chamber 12, and seals the sub-chamber 3. It is. The shaft hole 31 below the electromagnetic device 6 is provided with a heat shield sheet 34 that blocks high heat from the sub-chamber 3.
【００１３】７はコントローラでマイクロコンピュータ
からなり、エンジンの回転センサ７１、負荷センサ７２
やピストン２の位置センサ７３などからの検出信号が入
力されると、所定の演算処理が行われ格納された制御手
順に基づいて噴射ノズル３２や電磁装置６などに適切な
制御指令が発せられるように構成されている。Reference numeral 7 denotes a controller, which is composed of a microcomputer.
When a detection signal from the position sensor 73 of the piston 2 or the like is input, a predetermined control process is performed and an appropriate control command is issued to the injection nozzle 32 or the electromagnetic device 6 based on the stored control procedure. Is configured.
【００１４】つぎにこのように構成された本実施例の作
動を説明すると、エンジンの圧縮行程にてシリンダ１の
上部の主室１２側が高圧になった場合、所定のタイミン
グにて電磁弁が開放され制御弁５の茸弁５２が押上げら
れて高圧の圧気が副室３に流入する。ついで一旦開弁し
た制御弁５により主室１２および副室３は連通するので
両者の圧力差がなくなり、制御弁５の開閉は電磁装置６
への通電により自在に行えることになる。Next, the operation of this embodiment constructed as described above will be described. When the pressure in the main chamber 12 above the cylinder 1 becomes high during the compression stroke of the engine, the solenoid valve is opened at a predetermined timing. Then, the mushroom valve 52 of the control valve 5 is pushed up, and high-pressure air flows into the sub-chamber 3. Next, since the main chamber 12 and the sub-chamber 3 communicate with each other by the control valve 5 once opened, the pressure difference between them is eliminated, and the control valve 5 is opened and closed by the electromagnetic device 6.
It can be done freely by energizing to.
【００１５】なお、圧縮行程における圧縮された圧気の
押上げによる制御弁５の開弁は、電磁装置６への通電の
電磁力の大小により開弁の程度を制御できることにな
る。The degree of opening of the control valve 5 by pushing up the compressed air in the compression stroke can be controlled by the magnitude of the electromagnetic force for energizing the electromagnetic device 6.
【００１６】以上、本発明を上述の実施例によって説明
したが、本発明の主旨の範囲内で種々の変形や応用が可
能であり、これらの変形や応用を本発明の範囲から排除
するものではない。Although the present invention has been described with reference to the above embodiment, various modifications and applications are possible within the scope of the present invention, and these modifications and applications are not excluded from the scope of the present invention. Absent.
【００１７】[0017]
【発明の効果】上述の実施例のように本発明によれば、
燃焼室の副室と主室との間に設けた制御弁の弁座を連絡
口の副室側に設け、主室側の圧縮圧気により押上げられ
て開弁するとともに、電磁装置により閉鎖するようにし
たので、エンジンの圧縮行程の終期には圧気により自動
的に連絡口が開口して主室と副室との圧力差が減じて制
御弁の開閉が自在となり、また電磁装置への通電による
電磁力の制御によって押上げて開弁させる圧気圧力を調
節することができるという効果がある。According to the present invention as in the above embodiment,
A valve seat of a control valve provided between the sub-chamber and the main chamber of the combustion chamber is provided on the sub-chamber side of the communication port, and is opened by being pushed up by the compressed air of the main chamber side and closed by an electromagnetic device. At the end of the compression stroke of the engine, the communication port is automatically opened by the compressed air, reducing the pressure difference between the main chamber and sub chamber, allowing the control valve to open and close freely, and energizing the electromagnetic device. Thus, there is an effect that the pressure of the air to be pushed up and opened can be adjusted by the control of the electromagnetic force.
【図１】本発明にかかる燃焼室間制御弁の一実施例を示
す構成ブロック図である。FIG. 1 is a configuration block diagram showing one embodiment of a control valve between combustion chambers according to the present invention.
１…シリンダ ３…副室 ５…制御弁 ６…電磁装置 ７…コントローラ ３３…弁座 DESCRIPTION OF SYMBOLS 1 ... Cylinder 3 ... Subchamber 5 ... Control valve 6 ... Electromagnetic device 7 ... Controller 33 ... Valve seat
Claims (2)
に設けられて燃料の燃焼状態を制御する燃焼室間制御弁
において、前記の連絡口の副室側に弁座を備えて副室側
に移動して開弁するとともに、電磁力により閉弁方向に
バイアスする電磁装置を有することを特徴とする燃焼室
間制御弁。An inter-combustion chamber control valve provided at a communication port between a sub-chamber serving as a pre-combustion chamber and a main chamber to control a combustion state of fuel, wherein a valve seat is provided on the sub-chamber side of the communication port. An inter-combustion-chamber control valve, comprising: an electromagnetic device that moves to the sub-chamber side to open the valve and biases the valve in a valve-closing direction by an electromagnetic force.
電磁装置への通電の強弱により制御されることを特徴と
する請求項１記載の燃焼室間制御弁。2. The inter-combustion chamber control valve according to claim 1, wherein the closing force of the communication port by the control valve is controlled by the strength of energization to the electromagnetic device.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4271072A JP3059309B2 (en) | 1992-09-14 | 1992-09-14 | Control valve between combustion chambers |
| US08/120,348 US5454356A (en) | 1992-09-14 | 1993-09-14 | Engine with pre-chamber |
| EP93307224A EP0588593B1 (en) | 1992-09-14 | 1993-09-14 | Engine with pre-chamber |
| DE69315154T DE69315154T2 (en) | 1992-09-14 | 1993-09-14 | Internal combustion engine with prechamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4271072A JP3059309B2 (en) | 1992-09-14 | 1992-09-14 | Control valve between combustion chambers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0693858A JPH0693858A (en) | 1994-04-05 |
| JP3059309B2 true JP3059309B2 (en) | 2000-07-04 |
Family
ID=17494997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4271072A Expired - Lifetime JP3059309B2 (en) | 1992-09-14 | 1992-09-14 | Control valve between combustion chambers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3059309B2 (en) |
-
1992
- 1992-09-14 JP JP4271072A patent/JP3059309B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0693858A (en) | 1994-04-05 |
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